The top models of the iPhone 13 Pro and iPhone 13 Pro Max will receive an updated wide-angle camera module. Unlike current models, it will support autofocus. This will create sharper and sharper images. The new sensor is also credited with a 7P lens and an f / 1.8 aperture. For comparison, in the current line of iPhone 12 wide-angle camera has an aperture of f / 2.4.
By the way, in addition to the new wide-angle sensor, the iPhone 13 models will also receive improved low-light shooting. As for the periscope camera, you shouldn’t expect it in smartphones. Such a module is planned to be added to the iPhone only in 2023.